Two notions of fusion and the landscape of extensionality

Philosophical Studies 178 (10):3443-3463 (2021)
Download Edit this record How to cite View on PhilPapers
Abstract
There are two main ways in which the notion of mereological fusion is usually defined in the current literature in mereology which have been labelled ‘Leśniewski fusion’ and ‘Goodman fusion’. It is well-known that, with Minimal Mereology as the background theory, every Leśniewski fusion also qualifies as a Goodman fusion. However, the converse does not hold unless stronger mereological principles are assumed. In this paper I will discuss how the gap between the two notions can be filled, focussing in particular on two specific sets of principles that appear to be of particular philosophical interest. The first way to make the two notions equivalent can be used to shed some interesting light on the kind of intuition both notions seem to articulate. The second shows the importance of a little-known mereological principle which I will call ‘Mild Supplementation’. As I will show, the mereology obtained by adding Mild Supplementation to Minimal Mereology occupies an interesting position in the landscape of theories that are stronger than Minimal Mereology but weaker than what Achille Varzi and Roberto Casati have labelled ‘Extensional Mereology’.
Categories
(categorize this paper)
ISBN(s)
PhilPapers/Archive ID
LOSTNO-2
Upload history
Archival date: 2021-01-31
View other versions
Added to PP index
2021-01-31

Total views
86 ( #48,161 of 64,164 )

Recent downloads (6 months)
34 ( #22,153 of 64,164 )

How can I increase my downloads?

Downloads since first upload
This graph includes both downloads from PhilArchive and clicks on external links on PhilPapers.